The video was great and I changed the four rollers, pulley and belt in about an hour. I think it took longer to give the dryer a good cleaning than the repair took.
After I replaced the rollers I still had some noise from the dryer and discovered the blower wheel was worn out and wobbled on the shaft. Another video and another repair. It was a little difficult since the blower wheel would not unscrew with the 1/2 inch ratchet since it spun freely on the shaft. The advice about breaking the wheel off worked great and now the dryer works like it did when it was new 12 years ago.